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Current weather in Greenlawn is broken clouds.

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Weather data for Greenlawn is updated regularly with the latest available observations and forecasts.

Now · 7:09 PM

Greenlawn Weather & Hourly Forecast

United States · New York · 11740

72°F

Mostly cloudy

Feels like: 69°F

💧 Humidity 60% 🌡 Pressure 30.06 inHg 💨 Wind 9 mph 👁 Visibility 26.0 mi ☁ Clouds 77% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Greenlawn

Today

8:00 PM

Mostly cloudy night

71° 💧 None 💨 8 mph H 63%30.06 inHg

11:00 PM

Overcast night

70° 💧 None 💨 7 mph H 76%30.06 inHg

Tomorrow

2:00 AM

Overcast night

72° 💧 0.135 in 💨 8 mph H 82%30.00 inHg

5:00 AM

Thunderstorms

71° 💧 0.426 in 💨 8 mph H 95%29.94 inHg

8:00 AM

Thunderstorms

72° 💧 0.287 in 💨 9 mph H 97%29.91 inHg

11:00 AM

Light rain

75° 💧 0.049 in 💨 8 mph H 92%29.88 inHg

2:00 PM

Partly cloudy

76° 💧 0.001 in 💨 8 mph H 86%29.83 inHg

5:00 PM

Mostly sunny

78° 💧 0.001 in 💨 7 mph H 80%29.80 inHg

8:00 PM

Clear night

76° 💧 None 💨 6 mph H 86%29.83 inHg

11:00 PM

Clear night

74° 💧 0.000 in 💨 8 mph H 89%29.85 inHg

Monday

2:00 AM

Mostly clear night

73° 💧 None 💨 8 mph H 94%29.85 inHg

5:00 AM

Partly cloudy night

71° 💧 0.044 in 💨 8 mph H 87%29.88 inHg

8:00 AM

Light rain

68° 💧 0.005 in 💨 8 mph H 84%29.97 inHg

11:00 AM

Sunny

71° 💧 None 💨 11 mph H 65%30.03 inHg

2:00 PM

Sunny

72° 💧 None 💨 12 mph H 52%30.03 inHg

5:00 PM

Sunny

72° 💧 None 💨 12 mph H 51%30.06 inHg

Today

8:00 PM

Mostly cloudy night

71° 💧 None 💨 8 mph H 63%30.06 inHg

9:00 PM

Mostly cloudy night

70° 💧 None 💨 8 mph H 66%30.09 inHg

10:00 PM

Overcast night

70° 💧 None 💨 7 mph H 70%30.06 inHg

11:00 PM

Overcast night

70° 💧 None 💨 7 mph H 76%30.06 inHg

Tomorrow

12:00 AM

Overcast night

70° 💧 None 💨 7 mph H 80%30.03 inHg

1:00 AM

Overcast night

71° 💧 None 💨 6 mph H 81%30.03 inHg

2:00 AM

Overcast night

72° 💧 None 💨 8 mph H 82%30.00 inHg

3:00 AM

Overcast night

72° 💧 0.001 in 💨 9 mph H 86%29.97 inHg

4:00 AM

Thunderstorms

71° 💧 0.133 in 💨 10 mph H 94%29.97 inHg

5:00 AM

Thunderstorms

71° 💧 0.185 in 💨 8 mph H 95%29.94 inHg

6:00 AM

Thunderstorms

72° 💧 0.123 in 💨 9 mph H 96%29.94 inHg

7:00 AM

Thunderstorms

72° 💧 0.118 in 💨 9 mph H 97%29.91 inHg

8:00 AM

Thunderstorms

72° 💧 0.131 in 💨 9 mph H 97%29.91 inHg

9:00 AM

Light thunderstorms

72° 💧 0.092 in 💨 6 mph H 97%29.91 inHg

10:00 AM

Light thunderstorms

73° 💧 0.064 in 💨 8 mph H 96%29.88 inHg

11:00 AM

Light rain

75° 💧 0.021 in 💨 8 mph H 92%29.88 inHg

12:00 PM

Light rain

75° 💧 0.014 in 💨 9 mph H 90%29.85 inHg

1:00 PM

Light rain

74° 💧 0.014 in 💨 8 mph H 92%29.85 inHg

2:00 PM

Partly cloudy

76° 💧 0.001 in 💨 8 mph H 86%29.83 inHg

3:00 PM

Mostly cloudy

78° 💧 None 💨 8 mph H 79%29.83 inHg

4:00 PM

Mostly cloudy

79° 💧 None 💨 8 mph H 79%29.80 inHg

5:00 PM

Mostly sunny

78° 💧 0.001 in 💨 7 mph H 80%29.80 inHg

6:00 PM

Mostly sunny

78° 💧 0.001 in 💨 5 mph H 83%29.80 inHg

7:00 PM

Sunny

77° 💧 None 💨 4 mph H 85%29.80 inHg

8:00 PM

Clear night

76° 💧 None 💨 6 mph H 86%29.83 inHg

9:00 PM

Clear night

75° 💧 None 💨 7 mph H 88%29.85 inHg

10:00 PM

Clear night

75° 💧 None 💨 8 mph H 88%29.85 inHg

11:00 PM

Clear night

74° 💧 None 💨 8 mph H 89%29.85 inHg

Monday

12:00 AM

Clear night

74° 💧 None 💨 8 mph H 92%29.85 inHg

1:00 AM

Partly cloudy night

74° 💧 0.000 in 💨 8 mph H 94%29.85 inHg

2:00 AM

Mostly clear night

73° 💧 None 💨 8 mph H 94%29.85 inHg

3:00 AM

Mostly clear night

73° 💧 None 💨 10 mph H 85%29.85 inHg

4:00 AM

Mostly clear night

72° 💧 None 💨 8 mph H 86%29.85 inHg

5:00 AM

Partly cloudy night

71° 💧 None 💨 8 mph H 87%29.88 inHg

6:00 AM

Overcast night

71° 💧 0.000 in 💨 8 mph H 85%29.91 inHg

7:00 AM

Light rain

69° 💧 0.044 in 💨 9 mph H 84%29.94 inHg

8:00 AM

Light rain

68° 💧 0.005 in 💨 8 mph H 84%29.97 inHg

9:00 AM

Sunny

69° 💧 None 💨 8 mph H 82%30.00 inHg

10:00 AM

Sunny

70° 💧 None 💨 10 mph H 73%30.00 inHg

11:00 AM

Sunny

71° 💧 None 💨 11 mph H 65%30.03 inHg

12:00 PM

Sunny

72° 💧 None 💨 11 mph H 58%30.03 inHg

1:00 PM

Sunny

72° 💧 None 💨 12 mph H 55%30.03 inHg

2:00 PM

Sunny

72° 💧 None 💨 12 mph H 52%30.03 inHg

3:00 PM

Sunny

73° 💧 None 💨 12 mph H 50%30.03 inHg

4:00 PM

Sunny

73° 💧 None 💨 12 mph H 49%30.03 inHg

5:00 PM

Sunny

72° 💧 None 💨 12 mph H 51%30.06 inHg

6:00 PM

Sunny

71° 💧 None 💨 12 mph H 51%30.09 inHg

7:00 PM

Sunny

69° 💧 None 💨 11 mph H 53%30.12 inHg

8:00 PM

Clear night

68° 💧 None 💨 11 mph H 57%30.15 inHg

9:00 PM

Clear night

67° 💧 None 💨 11 mph H 58%30.18 inHg

10:00 PM

Clear night

66° 💧 None 💨 10 mph H 63%30.21 inHg

11:00 PM

Clear night

65° 💧 None 💨 10 mph H 66%30.24 inHg

Tuesday

12:00 AM

Clear night

64° 💧 None 💨 9 mph H 70%30.24 inHg

1:00 AM

Clear night

63° 💧 None 💨 10 mph H 71%30.24 inHg

2:00 AM

Clear night

63° 💧 None 💨 10 mph H 70%30.24 inHg

3:00 AM

Clear night

63° 💧 None 💨 11 mph H 64%30.24 inHg

4:00 AM

Clear night

63° 💧 None 💨 9 mph H 65%30.27 inHg

5:00 AM

Clear night

62° 💧 None 💨 9 mph H 67%30.30 inHg

6:00 AM

Clear night

61° 💧 None 💨 9 mph H 69%30.33 inHg

7:00 AM

Sunny

61° 💧 None 💨 9 mph H 69%30.33 inHg

8:00 AM

Sunny

62° 💧 None 💨 10 mph H 69%30.36 inHg

11:00 AM

Partly cloudy

66° 💧 None 💨 5 mph H 57%30.39 inHg

2:00 PM

Mostly cloudy

69° 💧 None 💨 4 mph H 58%30.36 inHg

5:00 PM

Mostly cloudy

67° 💧 None 💨 4 mph H 58%30.33 inHg

8:00 PM

Mostly cloudy night

63° 💧 None 💨 3 mph H 77%30.33 inHg

11:00 PM

Mostly cloudy night

62° 💧 None 💨 3 mph H 80%30.36 inHg

Wednesday

2:00 AM

Overcast night

61° 💧 None 💨 1 mph H 81%30.36 inHg

5:00 AM

Clear night

61° 💧 None 💨 2 mph H 82%30.36 inHg

8:00 AM

Partly cloudy

65° 💧 None 💨 3 mph H 79%30.36 inHg

11:00 AM

Mostly sunny

71° 💧 None 💨 4 mph H 70%30.39 inHg

2:00 PM

Mostly sunny

73° 💧 None 💨 7 mph H 69%30.33 inHg

5:00 PM

Mostly sunny

71° 💧 None 💨 6 mph H 74%30.30 inHg

8:00 PM

Clear night

68° 💧 None 💨 5 mph H 81%30.30 inHg

11:00 PM

Mostly clear night

68° 💧 None 💨 7 mph H 81%30.36 inHg

Thursday

2:00 AM

Overcast night

68° 💧 None 💨 3 mph H 84%30.30 inHg

5:00 AM

Overcast night

67° 💧 None 💨 1 mph H 88%30.30 inHg

8:00 AM

Overcast

69° 💧 None 💨 2 mph H 85%30.33 inHg

11:00 AM

Partly cloudy

74° 💧 None 💨 6 mph H 73%30.33 inHg

2:00 PM

Partly cloudy

77° 💧 None 💨 5 mph H 67%30.30 inHg

5:00 PM

Overcast

74° 💧 None 💨 6 mph H 77%30.27 inHg

8:00 PM

Overcast night

71° 💧 None 💨 7 mph H 81%30.24 inHg

11:00 PM

Mostly clear night

70° 💧 None 💨 7 mph H 82%30.21 inHg

Friday

2:00 AM

Partly cloudy night

70° 💧 None 💨 7 mph H 87%30.18 inHg

5:00 AM

Partly cloudy night

70° 💧 None 💨 6 mph H 87%30.15 inHg

8:00 AM

Partly cloudy

70° 💧 None 💨 6 mph H 83%30.15 inHg

2:00 PM

Mostly sunny

78° 💧 None 💨 9 mph H 72%30.03 inHg

8:00 PM

Light rain

75° 💧 None 💨 4 mph H 89%29.97 inHg

Saturday

2:00 AM

Light rain

71° 💧 None 💨 4 mph H 98%29.94 inHg

8:00 AM

Overcast

65° 💧 None 💨 11 mph H 83%30.06 inHg

2:00 PM

Mostly sunny

72° 💧 None 💨 8 mph H 60%30.09 inHg

8:00 PM

Overcast night

65° 💧 None 💨 9 mph H 77%30.09 inHg

Sunday

2:00 AM

Overcast night

63° 💧 None 💨 8 mph H 74%30.09 inHg

8:00 AM

Light rain

57° 💧 None 💨 8 mph H 76%30.12 inHg

2:00 PM

Overcast

60° 💧 None 💨 6 mph H 68%30.09 inHg

8:00 PM

Overcast night

61° 💧 None 💨 7 mph H 77%30.09 inHg

Monday

2:00 AM

Mostly cloudy night

59° 💧 None 💨 7 mph H 80%30.15 inHg

8:00 AM

Overcast

60° 💧 None 💨 9 mph H 73%30.21 inHg

2:00 PM

Partly cloudy

68° 💧 None 💨 11 mph H 59%30.24 inHg

8:00 PM

Overcast night

62° 💧 None 💨 11 mph H 78%30.24 inHg

Tuesday

2:00 AM

Overcast night

62° 💧 None 💨 8 mph H 80%30.21 inHg

8:00 AM

Light rain

63° 💧 None 💨 10 mph H 87%30.15 inHg

2:00 PM

Overcast

72° 💧 None 💨 10 mph H 85%30.12 inHg

8:00 PM

Light rain

68° 💧 None 💨 11 mph H 95%30.06 inHg

Wednesday

2:00 AM

Light rain

67° 💧 None 💨 8 mph H 98%30.06 inHg

8:00 AM

Overcast

63° 💧 None 💨 12 mph H 88%30.12 inHg

2:00 PM

Light rain

64° 💧 None 💨 11 mph H 77%30.18 inHg

8:00 PM

Overcast night

62° 💧 None 💨 11 mph H 86%30.24 inHg

Thursday

2:00 AM

Mostly cloudy night

60° 💧 None 💨 11 mph H 80%30.24 inHg

8:00 AM

Mostly cloudy

60° 💧 None 💨 10 mph H 80%30.33 inHg

2:00 PM

Mostly cloudy

66° 💧 None 💨 12 mph H 62%30.36 inHg

8:00 PM

Mostly cloudy night

61° 💧 None 💨 11 mph H 74%30.36 inHg

Friday

2:00 AM

Mostly cloudy night

59° 💧 None 💨 8 mph H 83%30.36 inHg

8:00 AM

Overcast

59° 💧 None 💨 8 mph H 82%30.36 inHg

2:00 PM

Mostly sunny

68° 💧 None 💨 9 mph H 65%30.30 inHg

8:00 PM

Overcast night

63° 💧 None 💨 8 mph H 88%30.27 inHg

Saturday

2:00 AM

Overcast night

63° 💧 None 💨 9 mph H 94%30.21 inHg

8:00 AM

Overcast

67° 💧 None 💨 8 mph H 93%30.12 inHg

2:00 PM

Overcast

72° 💧 None 💨 8 mph H 85%30.03 inHg

8:00 PM

Light rain

70° 💧 None 💨 13 mph H 93%29.94 inHg

Sunday

2:00 AM

Heavy rain

69° 💧 None 💨 12 mph H 97%29.83 inHg

8:00 AM

Overcast

70° 💧 None 💨 6 mph H 98%29.80 inHg

In Greenlawn and, more broadly, across the state of New York: The evening will feature mostly cloudy skies with temperatures remaining mild, ranging from 66 to 67 degrees Fahrenheit. Winds will be coming from the south at a steady 10 mph, with gusts reaching up to 26 mph. No significant rainfall is expected during the next few hours, so conditions should remain dry. The moderate wind may cause some occasional breezes, but overall, it should be a relatively calm evening. Temperatures are expected to stay steady through the night, providing comfortable conditions for outdoor activities.

15-Day Weather Outlook for Greenlawn

TomorrowTomorrow

Thunderstorms 79°/70° 💧 None 💨 10 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 76°/68° 💧 None 💨 12 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 69°/61° 💧 0.966 in 💨 11 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 73°/61° 💧 None 💨 7 mph

Thursday, Sep 17Thu Sep 17

Overcast 77°/67° 💧 0.001 in 💨 7 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 78°/70° 💧 None 💨 9 mph

Saturday, Sep 19Sat Sep 19

Light rain 75°/65° 💧 0.661 in 💨 11 mph

Sunday, Sep 20Sun Sep 20

Light rain 65°/57° 💧 0.092 in 💨 9 mph

Monday, Sep 21Mon Sep 21

Overcast 68°/59° 💧 0.006 in 💨 11 mph

Tuesday, Sep 22Tue Sep 22

Light rain 72°/62° 💧 0.186 in 💨 11 mph

Wednesday, Sep 23Wed Sep 23

Light rain 68°/63° 💧 0.194 in 💨 12 mph

Thursday, Sep 24Thu Sep 24

Overcast 66°/60° 💧 0.019 in 💨 12 mph

Friday, Sep 25Fri Sep 25

Overcast 68°/59° 💧 0.003 in 💨 11 mph

Saturday, Sep 26Sat Sep 26

Overcast 72°/63° 💧 0.006 in 💨 9 mph

Sunday, Sep 27Sun Sep 27

Heavy rain 70°/69° 💧 0.670 in 💨 13 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Greenlawn

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Greenlawn

Hourly forecast · Updated every 2 hours

Moderate

Nearest forecast value 8:00 PM

PM2.5 Fine particles Good 4,5µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 9,4µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Moderate 102,6µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,2µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Sensitive people should reduce strenuous and prolonged outdoor exertion.

UV & HEALTH

UV, Sun & Health Outlook in Greenlawn

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,2High 😐Moderate

Tomorrow UV 2,5Low 🙂Fair

Monday UV 6,0High 😐Moderate

Tuesday UV 6,4High 😐Moderate

Wednesday UV 6,6High 🙂Fair

Thursday UV 7,0High —Unavailable

Friday UV 5,0Moderate —Unavailable

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Caution for sensitive people

People with respiratory or cardiovascular conditions should reduce prolonged outdoor exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Greenlawn

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · GREENLAWN, NEW YORK

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

40/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 84% Real hourly forecast for the best viewing hour.

☾ Moonlight 2% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 10° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

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Forecast data for Greenlawn were last refreshed today at 7:09 PM. The current forecast period extends through 14/09/2026 at 5:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.